Willow 3.0 is the only wearable pump that offers total mobility—360 degrees of motion enabled by our patented, continuous latch suction technology and Spill-Proof Milk Bags. Other wearable pumps imitate Willow 3.0’s in-bra design, but leak if you move too much.

It's also the only in-bra wearable pump that offers two ways to pump and store your milk - choose from self-sealing Milk Bags or Containers.

Willow 3.0 offers complete, leak-free mobility when pumping with our Spill-Proof Milk Bags. With its gravity-defying continuous latch suction technology, you can pump in any position, from bending over to lying down. Willow Go doesn’t offer as full of a range of motion, but offers the same completely in-bra design and lets you pump totally hands-free and untethered. Willow Go’s “tug and release” suction technology is comparable to traditional pumps and other wearable pump brands.

Willow 3.0 offers more milk storage options. It’s compatible with Spill-Proof Milk Bags and reusable Containers, while Willow Go offers Containers only.

Both pumps are app connected, but Willow 3.0 offers smart pumping that tracks volume in real time and automatically records your session. Check out our comparison page for more, or take our pump quiz to decide which pump is right for you.

Some women are able to obtain full or partial reimbursement for their Willow Pump and accessories through insurance. Use our Insurance Verifier to check your coverage and purchase your discounted pump.

As you navigate through this process, start with our guide on how to get a breast pump covered by your insurance. It gives you all the questions that you need to take to your insurance provider to understand how to obtain coverage and the costs involved.

Yes, you can. Simply pay for your breast pump, milk bags and accessories using your FSA/HSA debit card at checkout, or pay with another credit card and submit your receipt to your plan administrator for reimbursement.

Yes! We partner with Affirm to offer split pay and installment payment plans for the Willow Wearable Breast Pump. Learn more about our financing options.

No, Willow 3.0 is the only pump that offers the option to pump into Spill-Proof Milk Bags or Reusable Containers. Milk Bags enable total 360 degree mobility, while Containers offer 180 degree mobility, superior to other wearable pumps.

We’ve re-engineered how Willow pumps to yield more milk per session–and offer more comfort and control. Generation 3.0 has a slower, softer pumping rhythm and a sensitivity setting for comfort, plus new Smart Suction Technology that adjusts based on your preferences to help you get more milk. Compatible with our new app exclusively for Generation 3.0, which offers fast, easy pairing and step-by-step onboarding.

Our easy-to-pair app lets you control your pump and track progress in real time, plus view pumping history. The app is available for iOS 14 and higher and Android OS 10 and higher. Please see list of compatible devices.

Start and pause your pumps, increase and decrease suction, track your pumping session in real time, and check your pumps’ battery levels. When Willow 3.0 isn’t in use, glance down at your watch to see when you last pumped. Willow 3.0 for Apple Watch is compatible with watchOS 8 and above, and Apple Watch Series 3 or later.

No. Willow 3.0 for Apple Watch is a companion app, meaning that it uses data from the Willow 3.0 app on your mobile phone. Therefore, your phone will need to remain within ~30 feet of your watch during your session.

Yes. Willow was designed to work with larger breast sizes including G and H bra cups.

We strongly recommend measuring yourself to determine your Willow size as it might be different from other pumps you’ve used. Unsure of your size? Visit our sizing guide or check out our exhaustive guide on how to measure your flange sizewhich includes pro tips from Willow’s lactation consultants.

No. But Willow 3.0 works best with a bra that provides a supportive, snug fit to hold it in place so pumping is even easier on you. We recommend wearing a full-coverage nursing bra that’s stretchy and has a flap. Avoid bras with underwire or padding. Go for maximum comfort and maximum support. The Perfect Pumping Bra has all of the above.

We know every ounce matters when it comes to pumping and breastfeeding, so we engineer and test our pumps to optimize milk expression and comfort. Willow 3.0 and Willow Go have a wearable, in-bra design, with a suction range and strength that is comparable to traditional double electric and hospital grade pumps. Willow 3.0 offers a proprietary continuous latch suction and unique pumping waveform with up to -245mmHG maximum suction. Willow Go offers maximum suction up to -280mmHG. Willow pumps are closed system pumps, just like hospital grade pumps.

While Willow’s suction strength is equivalent to hospital grade pumps, Willow pumps are single-user and have been clinically tested with established milk supply. Consult your health care provider if you are seeking to initiate lactation with a breast pump.

Our Spill-Proof Milk Bags and Reusable Containers hold up to 4 oz of milk (8 oz total). Willow 3.0 automatically shuts off when your Milk Bag or Container is full. If you pump more than 4 oz in a single session, you can easily switch out the bag or empty the container and continue pumping.

Yes! Willow 3.0 is covered under a 12 month warranty from the purchase date, and pump accessories — all replaceable pump parts including but not limited to flanges, FlexTubes™, containers, milk bags, diaphragms, duckbills, chargers and sizing inserts — are covered under a 90 day warranty. Please review our warranty policy.

Since breast pumps are single-user devices, use by more than one person, including purchasing second hand, will invalidate the warranty. Please keep your original proof of purchase from onewillow.com or an authorized retailer as it is required to exercise your warranty.

Willow cannot be used with any charger that is not provided with the pump or purchased as an accessory from Willow. Usage of third-party charging accessories is unsafe, may cause serious damage to your pump, and will invalidate the warranty.

Breast pumps and accessories are regulated as single-user products, and cannot be returned once the safety seal has been broken. See our returns policy.

• You can return an unopened Willow Pump within 60 days of the purchase date. If you decide to return your unopened pump or accessories, you must contact us to start the return process and to obtain a RMA number. Please review our return policies.

• Only products purchased from onewillow.com may be returned directly to us. For products purchased from our retail partners, please follow their instructions.

• Willow pumps are single-user medical devices and returns must be new, unopened (no seals broken), unused, and in the original packaging.